Stack 3 large sheets of foil on work surface. Place same cake pan in center. Gather foil snugly around pan bottom and up sides to waterproof.

For filling:Using electric mixer, beat cream cheese in large bowl until smooth and fluffy. Gradually beat in sugar, then salt. Beat in eggs, 1 at a time. Beat in sour cream, grated lemon peel, and lemon juice. Pour filling into pan.

Place wrapped cake pan in large roasting pan. Pour enough hot water into roasting pan to come halfway up sides of cake pan. Bake cake until filling is slightly puffed and moves only slightly when pan is shaken gently, about 1 hour 25 minutes. Remove cake pan from water bath; remove foil. Cool cake in pan on rack 2 hours. Chill uncovered until cold; cover and keep chilled at least 1 day and up to 2 days.

Cut around pan sides; carefully loosen pan bottom from sides and push up pan bottom to release cake. Place cake (still on pan bottom) on platter. Garnish with lemon leaves or twists.